An Oklahoma death row inmate convicted of first-degree murder in the 1979 shooting death of a 25-year-old Korean national has been executed.

61-year-old Anthony Rozelle Banks was pronounced dead Tuesday after he received a lethal injection of drugs at the Oklahoma State Penitentiary in McAlester. Banks is the fourth Oklahoma death row inmate to be executed this year.

Banks was convicted of first-degree murder and sentenced to death by a Tulsa County jury for the June 6, 1979, killing of Sun "Kim" Travis. Banks was already serving a life prison sentence for his conviction in the April 11, 1978, slaying of a Tulsa convenience store clerk during an armed robbery when he was linked to Travis' death by DNA evidence 18 years after her death.